50A Automatic Transfer Switch Controller for Solar and Generators
This 50A automatic transfer switch controller seamlessly switches between solar inverters and public power or generators. It prioritizes battery power and automatically switches to a backup power source when the main battery voltage is low.





Technical Specifications
Overview
Seamless Power Management for Off-Grid Systems
This 50A Automatic Transfer Switch (ATS) is designed to upgrade off-grid solar, wind, or hydro systems by providing uninterrupted power during low-resource periods or battery issues. It acts as an 'opposite UPS,' prioritizing battery power and automatically switching to public power or a generator when battery voltage drops. With a fast change-over time of under 16ms, it ensures continuous operation for all connected loads without flickering.
Key Performance Metrics
Performance Highlights
Electrical Specifications
- Battery System Voltage
- 12VDC24VDC48VDC
- Input Voltage (AC)
- 110V / 220V Auto-sensing
- Max Power (110VAC)
- 5.5 kW

Voltage Thresholds
Battery Voltage Protection Settings
| System Type | Low Cut-down (Default) | Low Recovery (Default) | Working Range |
|---|---|---|---|
| 12V System | 11V | 13.5V | 9-17V |
| 24V System | 22V | 27V | 18-30V |
| 48V System | 44V | 54V | 30-60V |
Operation & Monitoring
Transfer Switching Times
- Inverter to Public Power: ≤ 10ms
- Public Power to Inverter: ≤ 16ms
- LCD Monitoring
- Public Power StatusInverter StatusBattery VoltageWorking Status

Physical & Compliance
Compliance Certifications
- Dimensions
- 19 x 17 x 7.25 cm
- Net Weight
- 1.26 kg
Application Scenarios
Supported Installations
- Off-grid Solar/Wind to Grid Power transfer (House, Office, Cabin)
- Intelligent Battery Combiner (RV, Motor home, Boat)
- Generator to Inverter backup systems




